Raphaël G. Git Repositories - packbundle/blob - Twig/PackTokenParser.php

   1 <?php
   2
   3 namespace Rapsys\PackBundle\Twig;
   4
   5 use Symfony\Component\HttpKernel\Config\FileLocator;
   6 use Symfony\Component\Asset\PackageInterface;
   7 use Twig\Error\Error;
   8 use Twig\Node\Expression\AssignNameExpression;
   9 use Twig\Node\Node;
  10 use Twig\Node\SetNode;
  11 use Twig\Node\TextNode;
  12 use Twig\Source;
  13 use Twig\Token;
  14 use Twig\TokenParser\AbstractTokenParser;
  15
  16 class PackTokenParser extends AbstractTokenParser {
  17         ///The tag name
  18         protected $tag;
  19
  20         /**
  21          * Constructor
  22          *
  23          * @param FileLocator      locator The FileLocator instance
  24          * @param PackageInterface package The Assets Package instance
  25          * @param array            config  The config path
  26          * @param string           tag     The tag name
  27          * @param string           output  The default output string
  28          * @param array            filters The default filters array
  29          */
  30         public function __construct(FileLocator $locator, PackageInterface $package, $config, $tag, $output, $filters) {
  31                 //Save locator
  32                 $this->locator = $locator;
  33
  34                 //Save assets package
  35                 $this->package = $package;
  36
  37                 //Set name
  38                 $this->name = $config['name'];
  39
  40                 //Set scheme
  41                 $this->scheme = $config['scheme'];
  42
  43                 //Set timeout
  44                 $this->timeout = $config['timeout'];
  45
  46                 //Set agent
  47                 $this->agent = $config['agent'];
  48
  49                 //Set redirect
  50                 $this->redirect = $config['redirect'];
  51
  52                 //Set tag
  53                 $this->tag = $tag;
  54
  55                 //Set output
  56                 $this->output = $output;
  57
  58                 //Set filters
  59                 $this->filters = $filters;
  60         }
  61
  62         /**
  63          * Get the tag name
  64          *
  65          * @return string This tag name
  66          */
  67         public function getTag() {
  68                 return $this->tag;
  69         }
  70
  71         /**
  72          * Parse the token
  73          *
  74          * @param Token token The \Twig\Token instance
  75          *
  76          * @return Node The PackNode
  77          *
  78          * @todo see if we can't add a debug mode behaviour
  79          *
  80          * If twig.debug or env=dev (or rapsys_pack.config.debug?) is set, it should be possible to loop on each input
  81          * and process the captured body without applying requested filter.
  82          *
  83          * @todo list:
  84          * - detect debug mode
  85          * - retrieve fixe link from input s%@(Name)Bundle/Resources/public(/somewhere/file.ext)%/bundles/\L\1\E\2%
  86          * - for each inputs:
  87          *   - generate a set asset_url=x
  88          *   - generate a body
  89          */
  90         public function parse(Token $token) {
  91                 $parser = $this->parser;
  92                 $stream = $this->parser->getStream();
  93
  94                 $inputs = [];
  95                 $name = $this->name;
  96                 $output = $this->output;
  97                 $filters = $this->filters;
  98
  99                 $content = '';
 100
 101                 //Process the token block until end
 102                 while (!$stream->test(Token::BLOCK_END_TYPE)) {
 103                         //The files to process
 104                         if ($stream->test(Token::STRING_TYPE)) {
 105                                 //'somewhere/somefile.(css,img,js)' 'somewhere/*' '@jquery'
 106                                 $inputs[] = $stream->next()->getValue();
 107                         //The filters token
 108                         } elseif ($stream->test(Token::NAME_TYPE, 'filters')) {
 109                                 //filter='yui_js'
 110                                 $stream->next();
 111                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 112                                 $filters = array_merge($filters, array_filter(array_map('trim', explode(',', $stream->expect(Token::STRING_TYPE)->getValue()))));
 113                         //The output token
 114                         } elseif ($stream->test(Token::NAME_TYPE, 'output')) {
 115                                 //output='js/packed/*.js' OR output='js/core.js'
 116                                 $stream->next();
 117                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 118                                 $output = $stream->expect(Token::STRING_TYPE)->getValue();
 119                         //The name token
 120                         } elseif ($stream->test(Token::NAME_TYPE, 'name')) {
 121                                 //name='core_js'
 122                                 $stream->next();
 123                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 124                                 $name = $stream->expect(Token::STRING_TYPE)->getValue();
 125                         //Unexpected token
 126                         } else {
 127                                 $token = $stream->getCurrent();
 128                                 throw new Error(sprintf('Unexpected token "%s" of value "%s"', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getSourceContext());
 129                         }
 130                 }
 131
 132                 //Process end block
 133                 $stream->expect(Token::BLOCK_END_TYPE);
 134
 135                 //Process body
 136                 $body = $this->parser->subparse([$this, 'testEndTag'], true);
 137
 138                 //Process end block
 139                 $stream->expect(Token::BLOCK_END_TYPE);
 140
 141                 //TODO: debug mode should be inserted here before the output variable is rewritten
 142
 143                 //Replace star with sha1
 144                 if (($pos = strpos($output, '*')) !== false) {
 145                         //XXX: assetic use substr(sha1(serialize($inputs).serialize($filters).serialize($options)), 0, 7)
 146                         $output = substr($output, 0, $pos).sha1(serialize($inputs).serialize($filters)).substr($output, $pos + 1);
 147                 }
 148
 149                 //Process inputs
 150                 for($k = 0; $k < count($inputs); $k++) {
 151                         //Deal with generic url
 152                         if (strpos($inputs[$k], '//') === 0) {
 153                                 //Fix url
 154                                 $inputs[$k] = $this->scheme.substr($inputs[$k], 2);
 155                         //Deal with non url path
 156                         } elseif (strpos($inputs[$k], '://') === false) {
 157                                 //Check if we have a bundle path
 158                                 if ($inputs[$k][0] == '@') {
 159                                         //Resolve it
 160                                         $inputs[$k] = $this->getLocated($inputs[$k], $token->getLine(), $stream->getSourceContext());
 161                                 }
 162
 163                                 //Deal with globs
 164                                 if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
 165                                         //Get replacement
 166                                         $replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
 167                                         //Check that these are working files
 168                                         foreach($replacement as $input) {
 169                                                 //Check that it's a file
 170                                                 if (!is_file($input)) {
 171                                                         throw new Error(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 172                                                 }
 173                                         }
 174                                         //Replace with glob path
 175                                         array_splice($inputs, $k, 1, $replacement);
 176                                         //Fix current key
 177                                         $k += count($replacement) - 1;
 178                                 //Check that it's a file
 179                                 } elseif (!is_file($inputs[$k])) {
 180                                         throw new Error(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 181                                 }
 182                         }
 183                 }
 184
 185                 //Init context
 186                 $ctx = stream_context_create(
 187                         [
 188                                 'http' => [
 189                                         'timeout' => $this->timeout,
 190                                         'user_agent' => $this->agent,
 191                                         'redirect' => $this->redirect,
 192                                 ]
 193                         ]
 194                 );
 195
 196                 //Check inputs
 197                 if (!empty($inputs)) {
 198                         //Retrieve files content
 199                         foreach($inputs as $input) {
 200                                 //Try to retrieve content
 201                                 if (($data = file_get_contents($input, false, $ctx)) === false) {
 202                                         throw new Error(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getSourceContext());
 203                                 }
 204                                 //Append content
 205                                 $content .= $data;
 206                         }
 207                 } else {
 208                         //Trigger error about empty inputs ?
 209                         //XXX: There may be a legitimate case where we want an empty file or an error, feel free to contact the author in such case
 210                         #throw new Error('Empty inputs token', $token->getLine(), $stream->getSourceContext());
 211
 212                         //Send an empty node without inputs
 213                         return new Node();
 214                 }
 215
 216                 //Check filters
 217                 if (!empty($filters)) {
 218                         //Apply all filters
 219                         foreach($filters as $filter) {
 220                                 //Init args
 221                                 $args = [$stream->getSourceContext(), $token->getLine()];
 222                                 //Check if args is available
 223                                 if (!empty($filter['args'])) {
 224                                         //Append args if provided
 225                                         $args += $filter['args'];
 226                                 }
 227                                 //Init reflection
 228                                 $reflection = new \ReflectionClass($filter['class']);
 229                                 //Set instance args
 230                                 $tool = $reflection->newInstanceArgs($args);
 231                                 //Process content
 232                                 $content = $tool->process($content);
 233                                 //Remove object
 234                                 unset($tool, $reflection);
 235                         }
 236                 } else {
 237                         //Trigger error about empty filters ?
 238                         //XXX: There may be a legitimate case where we want only a merged file or an error, feel free to contact the author in such case
 239                         #throw new Error('Empty filters token', $token->getLine(), $stream->getSourceContext());
 240                 }
 241
 242                 //Retrieve asset uri
 243                 //XXX: this path is the merge of services.assets.path_package.arguments[0] and rapsys_pack.output.(css,img,js)
 244                 if (($outputUrl = $this->package->getUrl($output)) === false) {
 245                         throw new Error(sprintf('Unable to get url for asset: %s', $output), $token->getLine(), $stream->getSourceContext());
 246                 }
 247
 248                 //Check if we have a bundle path
 249                 if ($output[0] == '@') {
 250                         //Resolve it
 251                         $output = $this->getLocated($output, $token->getLine(), $stream->getSourceContext());
 252                 }
 253
 254                 //Create output dir if not present
 255                 if (!is_dir($dir = dirname($output))) {
 256                         try {
 257                                 //XXX: set as 0777, symfony umask (0022) will reduce rights (0755)
 258                                 if (mkdir($dir, 0777, true) === false) {
 259                                         throw new \Exception();
 260                                 }
 261                         } catch (\Exception $e) {
 262                                 throw new Error(sprintf('Output directory "%s" do not exists and unable to create it', $dir), $token->getLine(), $stream->getSourceContext(), $e);
 263                         }
 264                 }
 265
 266                 //Send file content
 267                 //XXX: to avoid partial content in reverse cache we use atomic rotation write, unlink and move
 268                 try {
 269                         if (file_put_contents($output.'.new', $content) === false) {
 270                                 throw new \Exception();
 271                         }
 272                 } catch(\Exception $e) {
 273                         throw new Error(sprintf('Unable to write to: %s', $output.'.new'), $token->getLine(), $stream->getSourceContext(), $e);
 274                 }
 275
 276                 //Remove old file
 277                 if (is_file($output)) {
 278                         try {
 279                                 if (unlink($output) === false) {
 280                                         throw new \Exception();
 281                                 }
 282                         } catch (\Exception $e) {
 283                                 throw new Error(sprintf('Unable to unlink: %s', $output), $token->getLine(), $stream->getSourceContext(), $e);
 284                         }
 285                 }
 286
 287                 //Rename it
 288                 try {
 289                         if (rename($output.'.new', $output) === false) {
 290                                 throw new \Exception();
 291                         }
 292                 } catch (\Exception $e) {
 293                         throw new Error(sprintf('Unable to rename: %s to %s', $output.'.new', $output), $token->getLine(), $stream->getSourceContext(), $e);
 294                 }
 295
 296                 //Set name in context key
 297                 $ref = new AssignNameExpression($name, $token->getLine());
 298
 299                 //Set output in context value
 300                 $value = new TextNode($outputUrl, $token->getLine());
 301
 302                 //Send body with context set
 303                 return new Node([
 304                         //This define name in twig template by prepending $context['<name>'] = '<output>';
 305                         new SetNode(true, $ref, $value, $token->getLine(), $this->getTag()),
 306                         //The tag captured body
 307                         $body
 308                 ]);
 309         }
 310
 311         /**
 312          * Test for tag end
 313          *
 314          * @param Token token The \Twig\Token instance
 315          *
 316          * @return bool
 317          */
 318         public function testEndTag(Token $token) {
 319                 return $token->test(['end'.$this->getTag()]);
 320         }
 321
 322         /**
 323          * Get path from bundled file
 324          *
 325          * @param string     file   The bundled file path
 326          * @param int        lineno The template line where the error occurred
 327          * @param Source     source The source context where the error occurred
 328          * @param \Exception prev   The previous exception
 329          *
 330          * @return string The resolved file path
 331          */
 332         public function getLocated($file, int $lineno = 0, Source $source = null, \Exception $prev = null) {
 333                 /*TODO: add a @jquery magic feature ?
 334                 if ($file == '@jquery') {
 335                         #header('Content-Type: text/plain');
 336                         #var_dump($inputs);
 337                         #exit;
 338                         return $this->config['jquery'];
 339                 }*/
 340
 341                 //Check that we have a / separator between bundle name and path
 342                 if (($pos = strpos($file, '/')) === false) {
 343                         throw new Error(sprintf('Invalid path "%s"', $file), $token->getLine(), $stream->getSourceContext());
 344                 }
 345
 346                 //Set bundle
 347                 $bundle = substr($file, 0, $pos);
 348
 349                 //Set path
 350                 $path = substr($file, $pos + 1);
 351
 352                 //Check for bundle suffix presence
 353                 //XXX: use "bundle templates automatic namespace" mimicked behaviour to find intended bundle and/or path
 354                 //XXX: see https://symfony.com/doc/4.3/templates.html#bundle-templates
 355                 if (strlen($bundle) < strlen('Bundle') || substr($bundle, -strlen('Bundle')) !== 'Bundle') {
 356                         //Append Bundle in an attempt to fix it's naming for locator
 357                         $bundle .= 'Bundle';
 358
 359                         //Check for public resource prefix presence
 360                         if (strlen($path) < strlen('Resources/public') || substr($path, 0, strlen('Resources/public')) != 'Resources/public') {
 361                                 //Prepend standard public path
 362                                 $path = 'Resources/public/'.$path;
 363                         }
 364                 }
 365
 366                 //Resolve bundle prefix
 367                 try {
 368                         $prefix = $this->locator->locate($bundle);
 369                         //Catch bundle does not exist or is not enabled exception
 370                 } catch(\InvalidArgumentException $e) {
 371                         //Fix lowercase first bundle character
 372                         if ($bundle[1] > 'Z' || $bundle[1] < 'A') {
 373                                 $bundle[1] = strtoupper($bundle[1]);
 374                         }
 375
 376                         //Detect double bundle suffix
 377                         if (strlen($bundle) > strlen('_bundleBundle') && substr($bundle, -strlen('_bundleBundle')) == '_bundleBundle') {
 378                                 //Strip extra bundle
 379                                 $bundle = substr($bundle, 0, -strlen('Bundle'));
 380                         }
 381
 382                         //Convert snake case in camel case
 383                         if (strpos($bundle, '_') !== false) {
 384                                 //Fix every first character following a _
 385                                 while(($cur = strpos($bundle, '_')) !== false) {
 386                                         $bundle = substr($bundle, 0, $cur).ucfirst(substr($bundle, $cur + 1));
 387                                 }
 388                         }
 389
 390                         //Resolve fixed bundle prefix
 391                         try {
 392                                 $prefix = $this->locator->locate($bundle);
 393                                 //Catch bundle does not exist or is not enabled exception again
 394                         } catch(\InvalidArgumentException $e) {
 395                                 //Bail out as bundle or path is invalid and we have no way to know what was meant
 396                                 throw new Error(sprintf('Invalid bundle name "%s" in path "%s". Maybe you meant "%s"', substr($file, 1, $pos - 1), $file, $bundle.'/'.$path), $token->getLine(), $stream->getSourceContext(), $e);
 397                         }
 398                 }
 399
 400                 //Return solved bundle prefix and path
 401                 return $prefix.$path;
 402         }
 403 }